2021/05/27 by A. J. Barclay, Barclay, A. J., A. R. W. McKellar +3
Chemistry · Earth and Planetary Sciences · Engineering · #Atmospheric Ozone and Climate #Atomic and Molecular Clusters (physics.atm-clus) #FOS: Physical sciences #Phase Equilibria and Thermodynamics #Spectroscopy and Laser Applications
paper · doi:10.48550/arxiv.2105.13259
openalex publication_date 2021/05/27 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28
Extensive infrared spectra of the weakly-bound CO2-CO dimer are observed in the carbon dioxide ν3 asymmetric stretch region (~2350 cm-1) using a tunable infrared OPO laser source to probe a pulsed slit jet supersonic expansion. Both C-bonded and O-bonded isomers are analyzed for the normal isotopologue as well as for 13CO2-CO and 16O13C18O-CO, the latter being the first observation of an asymmetrically substituted form for which all values of Ka are allowed. Combination bands involving the lowest in-plane intermolecular bending modes are also studied for both isomers. Weak bands near 2337 cm-1 are assigned to CO2 hot band transitions (v1, v2l2, v3) = (0111)